I have a 120vac to 12vac adaptor that has broken apart. all...

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Question by gil
Submitted on 6/26/2004
Related FAQ: Electrical Wiring FAQ (Part 1 of 2)
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I have a 120vac to 12vac adaptor that has broken apart. all I have left is the zip cord. how do I determine the polarity of the center of the plug, (the plug that connects to my appliance). The cord has one side that has a stripe on it. Is this the pos. or neg?

Answer by lol
Submitted on 9/29/2004
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what is a VAC 12

Answer by brian
Submitted on 10/3/2004
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Well.....if its AC it doesnt really have polarity I believe......?

Answer by john stover
Submitted on 8/14/2005
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If it was an AC to AC adapter, then it had no polarity. If you're going to use it with a DC power supply, then use an ohm meter to determine the tip/sleeve polarity

Answer by anonymous
Submitted on 9/15/2005
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If it is AC, polarity doesn't matter.

Answer by thisguy
Submitted on 7/6/2006
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It doesn't matter which one is positive because it is an ac plug. One it the + terminal for one have of the cycle, then the other terminal becomes +. You can connect it either way. You only need to worry about it when the plug is AC

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